Alumni Member
Jianhan Zhu (Alumni) 
Research Fellow
I have worked on the AKT, Dot.Kom, and ELeGI projects. Currently I am interested in expert search in organizational intranets. A novel two-stage language model is proposed for effective expert search, and achieved excellent results in TREC Enterprise Track Expert Search task.
I have led the development of the CORDER (Community Relation Discovery by Named Entities) system which measures associations between named entities in a text corpus by integrating their occurrences, distances in text, and frequencies in documents.
I authored the ESpotter tool, which provides effective named entity recognition for a domain by adapting its lexicon and patterns to the domain through a URL tree.
Keys: Information Retrieval, Expert Search, Enterprise Search, Natural Language Processing, Named Entity Recognition, Text Mining, Semantic Web, Web Link Structure Mining
Projects
Technologies
News
Publications
Zhu, J., Song, D., Rüger, S., Eisenstadt, M. and Motta, E. (2006). The Open University at TREC 2006 Enterprise Track ExpertSearch Task. In: Fifteenth Text REtrieval Conference (TREC2006), 14-17 Nov 2006, Gaithersburg, Maryland USA. https://oro.open.ac.uk/36078/.
Zhu, J., Song, D. and Rüger, S. (2007). The Open University at TREC 2007 Enterprise Track. In: The Sixteenth Text REtrieval Conference (TREC2007), 06-09 Nov 2007, Gaithersburg, Maryland USA. https://oro.open.ac.uk/36076/.
Overell, S., Llorente, A., Liu, H., Hu, R., Rae, A., Zhu, J., Song, D. and Rüger, S. (2008). MMIS at ImageCLEF 2008: experiments combining different evidence sources. In: CLEF workshop, 17-19 Sep 2008, Aarhus, Denmark. https://oro.open.ac.uk/36073/.
Zhu, J., Gonçalves, A., Uren, V., Motta, E. and Pacheco, R. (2005). CORDER: Community Relation Discovery by named Entity Recognition. In: Proceedings of the 3rd International Conference on Knowledge Capture, 2-5 Oct 2005, Banff, Canada. https://oro.open.ac.uk/23657/.
Zhu, J., Song, D. and Rüger, S. (2009). Integrating multiple windows and document features for expert finding. Journal of the American Society for Information Science and Technology, 60(4), pp. 694–715. https://oro.open.ac.uk/25877/.
Zhu, J., Song, D., Eisenstadt, M., Barladeanu, C. and Rüger, S. (2009). DYNIQX: A novel meta-search engine for the web. International Journal of Information Studies, 1(1), pp. 2–27. https://oro.open.ac.uk/25878/.
Zhu, J., Song, D., Eisenstadt, M., Barladeanu, C. and Rüger, S. (2008). Dyniqx: a novel meta-search engine for metadata based cross search. In: 1st International Conference on the Applications of Digital Information and Web Technologies (ICADIWT 2008), 4-6 Aug 2008, Ostrava, Czech Republic. https://oro.open.ac.uk/25889/.
Zhu, J., Song, D. and Rüger, S. (2008). Integrating document features for entity ranking. In: 6th International Workshop of the Initiative for the Evaluation of XML Retrieval, INEX 2007, 17-19 Dec 2007, Dagstuhl, Germany. https://oro.open.ac.uk/25890/.
Zhu, J., Song, D., Rüger, S. and Huang, X. (2008). Modeling document features for expert finding. In: The 17th ACM Conference on Information and Knowledge Management (CIKM'08), 26-30 Oct 2008, Napa Valley, CA, USA. https://oro.open.ac.uk/25887/.
Llorente, A., Overell, S., Liu, H., Hu, R., Rae, A., Zhu, J., Song, D. and Rüger, S. (2009). Exploiting term co-occurrence for enhancing automated image annotation. In: Evaluating Systems for Multilingual and Multimodal Information Access, 9th Workshop of the Cross-Language Evaluation Forum, 17-19 Sep 2008, Aarhus, Denmark. https://oro.open.ac.uk/23514/.
Zhu, J., Eisenstadt, M., Goncalves, A., Denham, C., Uren, V. and Song, D. (2007). Social Search with Missing Data: Which Ranking Algorithm? Journal of Digital Information Management: Special Issue on Web Retrieval, 5(5), pp. 249–261. https://oro.open.ac.uk/9730/.
Gonçalves, A., Zhu, J., Song, D., Uren, V. and Pacheco, R. (2006). LRD: latent relation discovery for vector space expansion and information retrieval. In: ed. Advances in Web-Age Information Management. Lecture Notes in Computer Science, Volume 401. Berlin: Springer, pp. 122–133. https://oro.open.ac.uk/9320/.
Zhu, J., Uren, V. and Motta, E. (2005). ESpotter: adaptive named entity recognition for web browsing. In: Workshop on IT Tools for Knowledge Management Systems (at WM2005 Conference), 11-13 Apr 2005, Kaiserslautern, Germany. https://oro.open.ac.uk/9333/.
Zhu, J., Hong, J. and Hughes, J.G. (2002). Using Markov models for web site link prediction. In: Proceedings of the Thirteenth ACM conference on Hypertext and Hypermedia (Hypertext'02), 11-15 Jun 2002, College Park, Maryland, USA. https://oro.open.ac.uk/9057/.
Zhu, J., Hong, J. and Hughes, J.G. (2001). PageRate: counting web users' votes. In: Proceedings of the 12th ACM Conference on Hypertext and Hypermedia (Hypertext'01), 14-18 Aug 2001, Arhus, Denmark. https://oro.open.ac.uk/9058/.
Zhu, J., Goncalves, A.L., Uren, V.S., Motta, E., Pacheco, R., Eisenstadt, M. and Song, D. (2007). Relation Discovery from web data for competency management. Web Intelligence and Agent Systems, 5(4), pp. 405–417. https://oro.open.ac.uk/8165/.
Zhu, J., Hong, J. and Hughes, J.G. (2002). Using Markov Chains for link prediction in adaptive web sites. In: Bustard, D.; Sterritt, W. and Liu, R. eds. Soft-Ware 2002: Computing in an Imperfect World : First International Conference, Soft-Ware 2002 Belfast, Northern Ireland, April 8-10, 2002. Proceedings. Lecture Notes in Computer Science, 2311. Springer, pp. 60–73. https://oro.open.ac.uk/2963/.
Zhu, J., Eisenstadt, M., Song, D. and Denham, C. (2006). Exploiting semantic association to answer 'vague queries'. In: Fourth International Conference on Active Media Technology, 7-9 Jun 2006, Brisbane, Australia. https://oro.open.ac.uk/3010/.
Lei, Y., Sabou, M., Lopez, V., Zhu, J., Uren, V. and Motta, E. (2006). An Infrastructure for acquiring high quality semantic metadata. In: 3rd European Semantic Web Conference (ESWC 2006), 11-14 Jun 2006, Budva, Montenegro. https://oro.open.ac.uk/3011/.
Zhu, J., Goncalves, A., Uren, V., Motta, E. and Pacheco, R. (2005). Mining web data for competency management. In: The 2005 IEEE/WIC/ACM International Conference on Web Intelligence, 19-22 Sep 2005, Compiegne University of Technology, France. https://oro.open.ac.uk/2966/.
Tech Reports
The Open University at TREC 2006 Enterprise Track Expert Search Task
Techreport ID: kmi-07-02
Date: 2007
Author(s): Jianhan Zhu, Dawei Song, Stefan Rüger, Marc Eisenstadt, Enrico Motta
LRD: Latent Relation Discovery for Vector Space Expansion and Information Retrieval
Techreport ID: kmi-06-09
Date: 2006
Author(s): Alexandre Gonçalves, Jianhan Zhu, Dawei Song, Victoria Uren, Roberto Pacheco
Exploiting Semantic Association To Answer Vague Queries
Techreport ID: KMI-06-01
Date: 2006
Author(s): Jianhan Zhu, Marc Eisenstadt, Dawei Song, Chris Denham
